esp-idf/components/esp32/wifi.c

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2016-08-17 11:08:22 -04:00
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stddef.h>
#include <stdlib.h>
#include "esp_err.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
//#include "tcpip_adapter.h"
#define ESP32_WORKAROUND 1
#if CONFIG_WIFI_ENABLED
#ifdef ESP32_WORKAROUND
SemaphoreHandle_t stdio_mutex_tx = NULL;
#define os_printf(fmt, ...) do {\
if (!stdio_mutex_tx) {\
stdio_mutex_tx = xSemaphoreCreateMutex();\
}\
\
xSemaphoreTake(stdio_mutex_tx, portMAX_DELAY);\
ets_printf(fmt, ##__VA_ARGS__);\
xSemaphoreGive(stdio_mutex_tx);\
} while (0)
#endif
static wifi_startup_cb_t startup_cb;
#define WIFI_DEBUG os_printf
#define WIFI_API_CALL_CHECK(info, api_call, ret) \
do{\
esp_err_t __err = (api_call);\
if ((ret) != __err) {\
WIFI_DEBUG("%s %d %s ret=%d\n", __FUNCTION__, __LINE__, (info), __err);\
return __err;\
}\
} while(0)
static void esp_wifi_task(void *pvParameters)
{
esp_err_t err;
wifi_init_config_t cfg;
cfg.event_q = (xQueueHandle)esp_event_get_handler();
do {
err = esp_wifi_init(&cfg);
if (err != ESP_OK) {
break;
}
if (startup_cb) {
err = (*startup_cb)();
if (err != ESP_OK) {
break;
}
}
err = esp_wifi_start();
if (err != ESP_OK) { // TODO: if already started, it's also OK
break;
}
#if CONFIG_WIFI_AUTO_CONNECT
wifi_mode_t mode;
esp_wifi_get_mode(&mode);
if (mode == WIFI_MODE_STA || mode == WIFI_MODE_APSTA) {
err = esp_wifi_connect();
if (err != ESP_OK) {
break;
}
}
#endif
} while (0);
if (err != ESP_OK) {
esp_wifi_deinit();
}
vTaskDelete(NULL);
}
void esp_wifi_startup(wifi_startup_cb_t cb)
{
startup_cb = cb;
xTaskCreatePinnedToCore(esp_wifi_task, "wifiTask", 4096, NULL, 5, NULL, 0);// TODO: rearrange task priority
}
#endif